Wiring
8.3 Electrical configuration
S7-1500R/H redundant system
264 System Manual, 01/2024, A5E41814787-AF
S7-1500R/H redundant system via upstream local power supplies to your
own distribution (or batteries), then you do not have to provide any additional protective
measures against overvoltage.
8.3 Electrical configuration
Galvanic isolation
In the redundant System S7-1500R/H, there is electrical isolation between:
• The communication interfaces (PROFINET) of the R-CPU and all other circuit components
• The communication interfaces (PROFINET) of the H-CPU and all other circuit components
High-frequency interference currents are conducted and electrostatic charges are avoided
through integrated RC combinations or integrated capacitors.
S7-1500R/H potentials
The figure below is a simplified diagram of potentials in the S7-1500R/H redundant system.
Figure 8-2 Potentials in S7-1500R/H using the example of CPU 1515R-2 PN
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